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                        <h2 id="renderprops&#x6A21;&#x5F0F;">render-props&#x6A21;&#x5F0F;</h2>
<p>&#x5982;&#x679C;&#x591A;&#x4E2A;&#x7EC4;&#x4EF6;&#x7684;&#x90E8;&#x5206;&#x529F;&#x80FD;&#x76F8;&#x540C;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x5C06;&#x8FD9;&#x4E9B;&#x90E8;&#x5206;&#x76F8;&#x540C;&#x7684;&#x529F;&#x80FD;&#x5C01;&#x88C5;&#x6210;&#x4E00;&#x4E2A;&#x7EC4;&#x4EF6;&#xFF0C;&#x518D;&#x901A;&#x8FC7;&#x4E00;&#x5B9A;&#x7684;&#x6A21;&#x5F0F;&#xFF0C;&#x5C06;&#x8FD9;&#x4E2A;&#x7EC4;&#x4EF6;&#x7684;&#x529F;&#x80FD;&#x8D4B;&#x4E88;&#x5176;&#x4ED6;&#x7EC4;&#x4EF6;&#xFF0C;&#x4ECE;&#x800C;&#x8FBE;&#x5230;&#x7EC4;&#x4EF6;&#x529F;&#x80FD;&#x590D;&#x7528;&#x7684;&#x76EE;&#x7684;&#xFF0C;&#x590D;&#x7528;&#x7EC4;&#x4EF6;&#x7684;&#x529F;&#x80FD;&#xFF0C;&#x5176;&#x5B9E;&#x5C31;&#x662F;&#x590D;&#x7528;&#x7EC4;&#x4EF6;&#x7684;state&#x4EE5;&#x53CA;&#x64CD;&#x4F5C;state&#x7684;&#x65B9;&#x6CD5;&#xFF0C;&#x5982;&#x4F55;&#x5B9E;&#x73B0;&#x8FD9;&#x79CD;&#x5E94;&#x7528;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x7528;render-props&#x6A21;&#x5F0F;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x9AD8;&#x9636;&#x7EC4;&#x4EF6;(HOC)&#x3002;&#x8FD9;&#x4E24;&#x79CD;&#x65B9;&#x5F0F;&#x4E0D;&#x662F;&#x65B0;&#x7684;api&#xFF0C;&#x800C;&#x662F;&#x901A;&#x8FC7;react&#x81EA;&#x8EAB;&#x7684;&#x7F16;&#x7801;&#x6280;&#x5DE7;&#x6765;&#x5B9E;&#x73B0;&#x7684;&#xFF0C;&#x4ECE;&#x800C;&#x5F62;&#x6210;&#x56FA;&#x5B9A;&#x7684;&#x6A21;&#x5F0F;&#x3002;</p>
<h4 id="&#x5B9E;&#x4F8B;&#xFF1A;&#x590D;&#x7528;&#x9F20;&#x6807;&#x7684;&#x4F4D;&#x7F6E;&#x72B6;&#x6001;">&#x5B9E;&#x4F8B;&#xFF1A;&#x590D;&#x7528;&#x9F20;&#x6807;&#x7684;&#x4F4D;&#x7F6E;&#x72B6;&#x6001;</h4>
<pre><code>// &#x5B9A;&#x4E49;&#x7EC4;&#x4EF6;&#x53EF;&#x4EE5;&#x8F93;&#x51FA;&#x9F20;&#x6807;&#x7684;&#x4F4D;&#x7F6E;
class Mouse extends Component {
    constructor(props){
        super(props);
        this.state = {
            x:0,
            y:0
        }
    }

    // &#x5728;window&#x4E0A;&#x7ED1;&#x5B9A;mousemove&#x4E8B;&#x4EF6;&#xFF0C;&#x53D1;&#x751F;&#x4E8B;&#x4EF6;&#x65F6;&#x89E6;&#x53D1;fnMouseMove&#x65B9;&#x6CD5;
    componentDidMount(){
        window.addEventListener(&apos;mousemove&apos;,this.fnMouseMove)
    }

    // &#x5B9A;&#x4E49;mousemove&#x89E6;&#x53D1;&#x7684;&#x65B9;&#x6CD5;
    // &#x6B64;&#x65B9;&#x6CD5;&#x7684;&#x4F5C;&#x7528;&#x662F;&#x5C06;&#x9F20;&#x6807;&#x7684;&#x5750;&#x6807;&#x503C;&#x8BBE;&#x7F6E;&#x5230;state&#x4E2D;
    fnMouseMove=(e)=&gt;{
        this.setState({
            x:e.clientX,
            y:e.clientY
        })
    }

    // &#x5728;&#x7EC4;&#x4EF6;&#x9500;&#x6BC1;&#x65F6;&#x89E3;&#x9664;&#x4E8B;&#x4EF6;&#x7ED1;&#x5B9A;&#xFF0C;&#x4F18;&#x5316;&#x7EC4;&#x4EF6;&#x7684;&#x6027;&#x80FD;
    componentWillUnmount(){
        window.removeEventListener(&apos;mousemove&apos;,this.fnMouseMove);
    }

    // &#x5728;render&#x65B9;&#x6CD5;&#x4E2D;&#x8FD4;&#x56DE;props&#x4E0A;&#x7684;show&#x65B9;&#x6CD5;&#x7684;&#x8C03;&#x7528;
    // &#x540C;&#x65F6;&#x5C06;&#x72B6;&#x6001;&#x4F20;&#x5165;
    // props.show&#x65B9;&#x6CD5;&#x8D1F;&#x8D23;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x5176;&#x5B83;&#x60F3;&#x590D;&#x7528;&#x8FD9;&#x4E2A;&#x72B6;&#x6001;&#x7684;&#x7EC4;&#x4EF6;
    render() {
        return this.props.show(this.state)
    }
}

export default Mouse;
</code></pre><p>&#x9488;&#x5BF9;&#x4E0D;&#x540C;&#x7684;&#x7EC4;&#x4EF6;&#x590D;&#x7528;&#x8FD9;&#x4E2A;&#x7EC4;&#x4EF6;&#xFF1A;  </p>
<pre><code>// &#x590D;&#x7528;&#x4E00;&#xFF1A;
const Postion = props =&gt;&lt;p&gt; &#x9F20;&#x6807;&#x7684;&#x4F4D;&#x7F6E;&#x662F;&#xFF1A;{props.x}-{props.y} &lt;/p&gt;

ReactDOM.render(
    &lt;Mouse show={mouse=&gt;&lt;Postion {...mouse} /&gt;} /&gt;,
    document.getElementById(&apos;root&apos;)
);  


// &#x590D;&#x7528;&#x4E8C;&#xFF1A;&#x8BA9;&#x56FE;&#x7247;&#x8DDF;&#x968F;&#x9F20;&#x6807;&#x4E00;&#x8D77;&#x79FB;&#x52A8;
const Cat = props =&gt; &lt;img src={cat} style={{&apos;position&apos;:&apos;fixed&apos;,&apos;left&apos;:props.x-40,&apos;top&apos;:props.y-50}} /&gt;

ReactDOM.render(
    &lt;Mouse show={mouse =&gt; &lt;Cat {...mouse} /&gt;} /&gt;, 
    document.getElementById(&apos;root&apos;)
);
</code></pre><h4 id="&#x4F7F;&#x7528;children&#x5C5E;&#x6027;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x5B9E;&#x73B0;">&#x4F7F;&#x7528;children&#x5C5E;&#x6027;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x5B9E;&#x73B0;</h4>
<p>&#x4F7F;&#x7528;children&#x5C5E;&#x6027;&#x7684;&#x65B9;&#x5F0F;&#x5B9E;&#x73B0;&#xFF0C;&#x9700;&#x8981;&#x4FEE;&#x6539;&#x4E24;&#x4E2A;&#x5730;&#x65B9;&#xFF1A;</p>
<pre><code>// &#x7EC4;&#x4EF6;&#x5185;&#x90E8;&#x4FEE;&#x6539;&#x6210;children&#x8C03;&#x7528;&#x7684;&#x65B9;&#x5F0F;&#xFF1A;
return this.props.children(this.state)

//&#x4F7F;&#x7528;&#x7EC4;&#x4EF6;&#x65F6;&#x4F7F;&#x7528;&#x53CC;&#x6807;&#x7B7E;&#x7684;&#x65B9;&#x5F0F;
ReactDOM.render(
    &lt;Mouse&gt;{mouse=&gt;&lt;Postion {...mouse} /&gt;}&lt;/Mouse&gt;, 
    document.getElementById(&apos;root&apos;)
);
</code></pre>
                    
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